You bought a balloon for a birthday party in January. It was so cold outside that you ran into the house and forgot the balloon in the car. You go out to the car a few hours later and get the balloon. You noticed that the balloon was a little deflated. Once you brought the balloon into the house, after about 20 minutes, the balloon was back to normal. Part A: Explain what happened to cause the balloon to deflate and then inflate. Be sure to use unit vocabulary and specific details to support your answer.

Part B: Using the information you provided in Part A, explain what would happen if you left an inflated balloon in the car on a very hot summer day.